AzerothCore Module: Bot Level Brackets

Disclaimer: This module requires the Playerbots module. Please ensure that the Playerbots module is installed and running before using this module.

Overview

The Bot Level Brackets module for AzerothCore ensures an even spread of player bots across configurable level ranges (brackets). It periodically monitors bot levels and automatically adjusts them by transferring bots from overpopulated brackets to those with a deficit. During adjustments, bots will be run through the normal Playerbots Randomize function, clearing and restoring them based on their new level. Bots that are not immediately safe for level reset (for example, those in combat or engaged in other activities) are flagged for pending adjustment and processed later when they become safe. Additionally, Death Knight bots are safeguarded to never be assigned a level below 55.

Features

• Configurable Faction-Specific Level Brackets:
  Define nine distinct level brackets for Alliance and Horde bots with configurable lower and upper bounds:

  • 1-9 , 10-19 , 20-29 , 30-39 , 40-49 , 50-59 , 60-69 , 70-79 , 80

• Desired Percentage Distribution:
  Target percentages can be set for the number of bots within each level bracket. The sum of percentages for each faction must equal 100. If it does not, the system will try to balance out the remaining percentages itself.

• Dynamic Bot Adjustment:
  Bots in overpopulated brackets are automatically adjusted to a random level within a bracket with a deficit. Adjustments include resetting XP, removing equipped items, trade skills, learned spells, quests, and active auras, and dismissing pets.

• Death Knight Level Safeguard:
  Bots of the Death Knight class are enforced a minimum level of 55, ensuring they are only assigned to higher brackets.

• Support for Random Bots:
  The module applies exclusively to bots managed by RandomPlayerbotMgr.

• Dynamic Distribution Toggle:
  Enable or disable the dynamic recalculation of bot distribution percentages based on the number of non-bot players in each level bracket via the BotLevelBrackets.UseDynamicDistribution option.

• Dynamic Real Player Weighting with Inverse Scaling:
  When dynamic distribution is enabled, the module uses a configurable weight multiplier (set via BotLevelBrackets.RealPlayerWeight) to boost each real player's contribution to the desired distribution. This weight is further scaled inversely by the total number of real players online, ensuring that when few players are active, each player's impact on the bot distribution is significantly increased.
  Note: The RealPlayerWeight option only takes effect when BotLevelBrackets.UseDynamicDistribution is enabled.

• Debug Mode:
  An optional debug mode provides detailed logging for monitoring bot adjustments and troubleshooting module operations.

Minimum and Maximum Bot Level Support

This module now supports setting a minimum and maximum level for random bots via the Playerbots playerbots.conf options:

• AiPlayerbot.RandomBotMinLevel:
  Sets the minimum level allowed for random bots. The default value is 1.

• AiPlayerbot.RandomBotMaxLevel:
  Sets the maximum level allowed for random bots. The default value is 80.

Warning: If you configure the maximum bot level to a value below 55, ensure that Death Knight bots are disabled. The module enforces a minimum level of 55 for Death Knight bots; therefore, setting the maximum level under 55 would conflict with this safeguard and could lead to unintended behavior and Death Knight bots not moving brackets.

Dynamic Real Player Weighting and Scaling

When dynamic distribution is enabled (BotLevelBrackets.UseDynamicDistribution), the module recalculates the desired bot percentages for each level bracket based on the number of non-bot players present.

The total weight across all brackets is computed, and each bracket’s desired percentage is derived from its share of that total. This ensures that while more players in a bracket increase its weight, each additional player contributes progressively less.

Installation

1. Clone the Module
   Ensure the AzerothCore Playerbots fork is installed and running. Clone the module into your AzerothCore modules directory:

   cd /path/to/azerothcore/modules
   git clone https://github.com/DustinHendrickson/mod-player-bot-level-brackets.git
   

2. Recompile AzerothCore
   Rebuild the project with the new module:

   cd /path/to/azerothcore
   mkdir build && cd build
   cmake ..
   make -j$(nproc)
   

3. Configure the Module
   Rename the configuration file:

   mv /path/to/azerothcore/modules/mod_player_bot_level_brackets.conf.dist /path/to/azerothcore/modules/mod_player_bot_level_brackets.conf
   

4. Restart the Server
   Launch the world server:

   ./worldserver
   

Configuration Options

Customize the module’s behavior by editing the mod_player_bot_level_brackets.conf file. The configuration options are separated for Alliance and Horde bots:

Global Settings

Setting	Description	Default	Valid Values
BotLevelBrackets.DebugMode	Enables detailed debug logging for module operations.	0	0 (off) / 1 (on)
BotLevelBrackets.CheckFrequency	Frequency (in seconds) for performing the bot bracket distribution check.	300	Positive Integer
BotLevelBrackets.CheckFlaggedFrequency	Frequency (in seconds) at which the bot level reset is performed for flagged bots that failed safety checks initially.	15	Positive Integer
BotLevelBrackets.RealPlayerWeight	Multiplier applied to each real player's contribution in their level bracket. This value is further scaled inversely by the total number of real players online. Only active if dynamic distribution is enabled.	1.0	Floating point number
BotLevelBrackets.UseDynamicDistribution	Enables dynamic recalculation of bot distribution percentages based on the number of non-bot players in each bracket.	0	0 (off) / 1 (on)

Alliance Level Brackets Configuration

The percentages below must sum to 100.

Setting	Description	Default	Valid Values
BotLevelBrackets.Alliance.Range1Pct	Desired percentage of Alliance bots within level range 1-9.	12	0-100
BotLevelBrackets.Alliance.Range2Pct	Desired percentage of Alliance bots within level range 10-19.	11	0-100
BotLevelBrackets.Alliance.Range3Pct	Desired percentage of Alliance bots within level range 20-29.	11	0-100
BotLevelBrackets.Alliance.Range4Pct	Desired percentage of Alliance bots within level range 30-39.	11	0-100
BotLevelBrackets.Alliance.Range5Pct	Desired percentage of Alliance bots within level range 40-49.	11	0-100
BotLevelBrackets.Alliance.Range6Pct	Desired percentage of Alliance bots within level range 50-59.	11	0-100
BotLevelBrackets.Alliance.Range7Pct	Desired percentage of Alliance bots within level range 60-69.	11	0-100
BotLevelBrackets.Alliance.Range8Pct	Desired percentage of Alliance bots within level range 70-79.	11	0-100
BotLevelBrackets.Alliance.Range9Pct	Desired percentage of Alliance bots at level 80.	11	0-100

Horde Level Brackets Configuration

The percentages below must sum to 100.

Setting	Description	Default	Valid Values
BotLevelBrackets.Horde.Range1Pct	Desired percentage of Horde bots within level range 1-9.	12	0-100
BotLevelBrackets.Horde.Range2Pct	Desired percentage of Horde bots within level range 10-19.	11	0-100
BotLevelBrackets.Horde.Range3Pct	Desired percentage of Horde bots within level range 20-29.	11	0-100
BotLevelBrackets.Horde.Range4Pct	Desired percentage of Horde bots within level range 30-39.	11	0-100
BotLevelBrackets.Horde.Range5Pct	Desired percentage of Horde bots within level range 40-49.	11	0-100
BotLevelBrackets.Horde.Range6Pct	Desired percentage of Horde bots within level range 50-59.	11	0-100
BotLevelBrackets.Horde.Range7Pct	Desired percentage of Horde bots within level range 60-69.	11	0-100
BotLevelBrackets.Horde.Range8Pct	Desired percentage of Horde bots within level range 70-79.	11	0-100
BotLevelBrackets.Horde.Range9Pct	Desired percentage of Horde bots at level 80.	11	0-100

Debugging

To enable detailed debug logging, update the configuration file:

BotLevelBrackets.DebugMode = 1

This setting outputs logs detailing bot level adjustments, percentages and distribution to the server console.

Troubleshooting

Bots are not randomizing their levels within the ranges brackets. Make sure in your playerbots.conf that AiPlayerbot.DisableRandomLevels = false. Otherwise bots will be all reset to the set level in your playerbots config.

License

This module is released under the GNU GPL v2 license, consistent with AzerothCore's licensing model.

Contribution

Created by Dustin Hendrickson.

Pull requests and issues are welcome. Please ensure that contributions adhere to AzerothCore's coding standards.